<?php
    /********************************************************
     *		@author Kyler You <QQ:2444756311>
     *		@link http://mp.weixin.qq.com/wiki/home/index.html
     *		@version 2.0.1
     *		@uses $wxApi = new WxApi();
     *		@package 微信API接口 陆续会继续进行更新
     ********************************************************/

    class WxApi {
        const appId         = "";
        const appSecret     = ""; 
        const mchid         = ""; //商户号
        const privatekey    = ""; //私钥
        public $parameters  = array();

        public function __construct(){

        }

        /****************************************************
         *	微信提交API方法，返回微信指定JSON
         ****************************************************/

        public function wxHttpsRequest($url,$data = null){
                $curl = curl_init();
                curl_setopt($curl, CURLOPT_URL, $url);
                curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
                curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
                if (!empty($data)){
                        curl_setopt($curl, CURLOPT_POST, 1);
                        curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
                }
                curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
                $output = curl_exec($curl);
                curl_close($curl);
                return $output;
        }

        /****************************************************
         *  微信带证书提交数据 - 微信红包使用
         ****************************************************/

        public function wxHttpsRequestPem($url, $vars, $second=30,$aHeader=array()){
                $ch = curl_init();
                //超时时间
                curl_setopt($ch,CURLOPT_TIMEOUT,$second);
                curl_setopt($ch,CURLOPT_RETURNTRANSFER, 1);
                //这里设置代理，如果有的话
                //curl_setopt($ch,CURLOPT_PROXY, '10.206.30.98');
                //curl_setopt($ch,CURLOPT_PROXYPORT, 8080);
                curl_setopt($ch,CURLOPT_URL,$url);
                curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,false);
                curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,false);

                //以下两种方式需选择一种

                //第一种方法，cert 与 key 分别属于两个.pem文件
                //默认格式为PEM，可以注释
                curl_setopt($ch,CURLOPT_SSLCERTTYPE,'PEM');
                curl_setopt($ch,CURLOPT_SSLCERT,getcwd().'/apiclient_cert.pem');
                //默认格式为PEM，可以注释
                curl_setopt($ch,CURLOPT_SSLKEYTYPE,'PEM');
                curl_setopt($ch,CURLOPT_SSLKEY,getcwd().'/apiclient_key.pem');

                curl_setopt($ch,CURLOPT_CAINFO,'PEM');
                curl_setopt($ch,CURLOPT_CAINFO,getcwd().'/rootca.pem');

                //第二种方式，两个文件合成一个.pem文件
                //curl_setopt($ch,CURLOPT_SSLCERT,getcwd().'/all.pem');

                if( count($aHeader) >= 1 ){
                        curl_setopt($ch, CURLOPT_HTTPHEADER, $aHeader);
                }

                curl_setopt($ch,CURLOPT_POST, 1);
                curl_setopt($ch,CURLOPT_POSTFIELDS,$vars);
                $data = curl_exec($ch);
                if($data){
                        curl_close($ch);
                        return $data;
                }
                else { 
                        $error = curl_errno($ch);
                        echo "call faild, errorCode:$error\n"; 
                        curl_close($ch);
                        return false;
                }
        }

        /****************************************************
         *	微信获取AccessToken 返回指定微信公众号的at信息
         ****************************************************/

        public function wxAccessToken($appId = NULL , $appSecret = NULL){
                $appId 			= is_null($appId) ? self::appId : $appId;
                $appSecret 		= is_null($appSecret) ? self::appSecret : $appSecret;
                //echo $appId,$appSecret;
                $url 			= "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$appId."&secret=".$appSecret;
                $result 		= $this->wxHttpsRequest($url);
                //print_r($result);
                $jsoninfo 		= json_decode($result, true);
                $access_token 	= $jsoninfo["access_token"];
                return $access_token;
        }

        /****************************************************
         *	微信获取AccessToken 返回指定微信公众号的at信息
         ****************************************************/

        public function wxJsApiTicket($appId = NULL , $appSecret = NULL){
                $appId 			= is_null($appId) ? self::appId : $appId;
                $appSecret 		= is_null($appSecret) ? self::appSecret : $appSecret;
                $url 		= "https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token=".$this->wxAccessToken();
                $result 		= $this->wxHttpsRequest($url);
                $jsoninfo 		= json_decode($result, true);
                $ticket = $jsoninfo['ticket'];
                return $ticket;
        }

        /****************************************************
         *	微信设置JSAPI参数
         ****************************************************/
        
        public function wxSignPackage() {
          $jsapiTicket = $this->wxJsApiTicket();

          // 注意 URL 一定要动态获取，不能 hardcode.
          $protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' || $_SERVER['SERVER_PORT'] == 443) ? "https://" : "http://";
          $url = "$protocol$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";

          $timestamp = time();
          $nonceStr = $this->wxNonceStr();

          // 这里参数的顺序要按照 key 值 ASCII 码升序排序
          $string = "jsapi_ticket=$jsapiTicket&noncestr=$nonceStr&timestamp=$timestamp&url=$url";

          $signature = sha1($string);

          $signPackage = array(
            "appId"     => self::appId,
            "nonceStr"  => $nonceStr,
            "timestamp" => $timestamp,
            "url"       => $url,
            "signature" => $signature,
            "rawString" => $string
          );  
          return $signPackage; 
        }
        
        /****************************************************
         *	微信通过OPENID获取用户信息，返回数组
         ****************************************************/

        public function wxGetUser($openId){
                $wxAccessToken 	= $this->wxAccessToken();
                $url 			= "https://api.weixin.qq.com/cgi-bin/user/info?access_token=".$wxAccessToken."&openid=".$openId."&lang=zh_CN";
                $result 		= $this->wxHttpsRequest($url);
                $jsoninfo 		= json_decode($result, true);
                return $jsoninfo;
        }

        /****************************************************
         *	微信通过指定模板信息发送给指定用户，发送完成后返回指定JSON数据
         ****************************************************/

        public function wxSendTemplate($jsonData){
                $wxAccessToken 	= $this->wxAccessToken();
                $url			= "https://api.weixin.qq.com/cgi-bin/message/template/send?access_token=".$wxAccessToken;
                $result 		= $this->wxHttpsRequest($url,$jsonData);
                return $result;
        }

        /****************************************************
         *      发送自定义的模板消息
         ****************************************************/

        public function wxSetSend($touser, $template_id, $url, $data, $topcolor = '#7B68EE'){
                $template = array(
                        'touser' => $touser,
                        'template_id' => $template_id,
                        'url' => $url,
                        'topcolor' => $topcolor,
                        'data' => $data
                );
                $jsonData = json_encode($template);
                $result = $this->wxSendTemplate($jsonData);
                return $result;
        }

        /****************************************************
         *	微信设置OAUTH跳转URL，返回字符串信息 - SCOPE = snsapi_base //验证时不返回确认页面，只能获取OPENID
         ****************************************************/

        public function wxOauthBase($redirectUrl,$state = "",$appId = NULL){
                $appId 			= is_null($appId) ? self::appId : $appId;
                $url = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=".$appId."&redirect_uri=".$redirectUrl."&response_type=code&scope=snsapi_base&state=".$state."#wechat_redirect";
                return $url;
        }

        /****************************************************
         *	微信设置OAUTH跳转URL，返回字符串信息 - SCOPE = snsapi_userinfo //获取用户完整信息
         ****************************************************/

        public function wxOauthUserinfo($redirectUrl,$state = "",$appId = NULL){
                $appId 			= is_null($appId) ? self::appId : $appId;
                $url = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=".$appId."&redirect_uri=".$redirectUrl."&response_type=code&scope=snsapi_userinfo&state=".$state."#wechat_redirect";
                return $url;
        }

        /****************************************************
         *	微信OAUTH跳转指定URL
         ****************************************************/

        public function wxHeader($url){
                header("location:".$url);
        }

        /****************************************************
         *	微信通过OAUTH返回页面中获取AT信息
         ****************************************************/

        public function wxOauthAccessToken($code,$appId = NULL , $appSecret = NULL){
                $appId 			= is_null($appId) ? self::appId : $appId;
                $appSecret 		= is_null($appSecret) ? self::appSecret : $appSecret;
                $url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=".$appId."&secret=".$appSecret."&code=".$code."&grant_type=authorization_code";
                $result 		= $this->wxHttpsRequest($url);
                //print_r($result);
                $jsoninfo 		= json_decode($result, true);
                //$access_token 	= $jsoninfo["access_token"];
                return $jsoninfo;			
        }

        /****************************************************
         *	微信通过OAUTH的Access_Token的信息获取当前用户信息 // 只执行在snsapi_userinfo模式运行
         ****************************************************/

        public function wxOauthUser($OauthAT,$openId){
                $url 			= "https://api.weixin.qq.com/sns/userinfo?access_token=".$OauthAT."&openid=".$openId."&lang=zh_CN";
                $result 		= $this->wxHttpsRequest($url);
                $jsoninfo 		= json_decode($result, true);
                return $jsoninfo;			
        }
        
        /*****************************************************
         *      生成随机字符串 - 最长为32位字符串
         *****************************************************/
        public function wxNonceStr($length = 16, $type = FALSE) {
            $chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
            $str = "";
            for ($i = 0; $i < $length; $i++) {
              $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
            }
            if($type == TRUE){
                return strtoupper(md5(time() . $str));
            }
            else {
                return $str;
            }
        }
        
        /*******************************************************
         *      微信商户订单号 - 最长28位字符串
         *******************************************************/
        
        public function wxMchBillno($mchid = NULL) {
            if(is_null($mchid)){
                if(self::mchid == "" || is_null(self::mchid)){
                    $mchid = time();
                }
                else{
                    $mchid = self::mchid;
                }
            }
            else{
                $mchid = substr(addslashes($mchid),0,10);
            }
            return date("Ymd",time()).time().$mchid;
        }
        
        /*******************************************************
         *      微信格式化数组变成参数格式 - 支持url加密
         *******************************************************/       
        
        public function wxSetParam($parameters){
            if(is_array($parameters) && !empty($parameters)){
                $this->parameters = $parameters;
                return $this->parameters;
            }
            else{
                return array();
            }
        }
        
        /*******************************************************
         *      微信格式化数组变成参数格式 - 支持url加密
         *******************************************************/
        
	public function wxFormatArray($parameters = NULL, $urlencode = FALSE){
            if(is_null($parameters)){
                $parameters = $this->parameters;
            }
            $restr = "";//初始化空
            ksort($parameters);//排序参数
            foreach ($parameters as $k => $v){//循环定制参数
                if (null != $v && "null" != $v && "sign" != $k) {
                    if($urlencode){//如果参数需要增加URL加密就增加，不需要则不需要
                        $v = urlencode($v);
                    }
                    $restr .= $k . "=" . $v . "&";//返回完整字符串
                }
            }
            if (strlen($restr) > 0) {//如果存在数据则将最后“&”删除
                $restr = substr($restr, 0, strlen($restr)-1);
            }
            return $restr;//返回字符串
	}
        
        /*******************************************************
         *      微信MD5签名生成器 - 需要将参数数组转化成为字符串[wxFormatArray方法]
         *******************************************************/
        public function wxMd5Sign($content, $privatekey){
	    try {
                if (is_null($key)) {
                    throw new Exception("财付通签名key不能为空！");
                }
                if (is_null($content)) {
                    throw new Exception("财付通签名内容不能为空");
                }
                $signStr = $content . "&key=" . $key;
                return strtoupper(md5($signStr));
            }
            catch (Exception $e)
            {
                die($e->getMessage());
            }
        }
        
        /*******************************************************
         *      微信Sha1签名生成器 - 需要将参数数组转化成为字符串[wxFormatArray方法]
         *******************************************************/
        public function wxSha1Sign($content, $privatekey){
            try {
                if (is_null($key)) {
                    throw new Exception("财付通签名key不能为空！");
                }
                if (is_null($content)) {
                    throw new Exception("财付通签名内容不能为空");
                }
                $signStr = $content . "&key=" . $key;
                return strtoupper(sha1($signStr));
            }
            catch (Exception $e)
            {
                die($e->getMessage());
            }
        }

        /*******************************************************
         *      将数组解析XML - 微信红包接口
         *******************************************************/
	public function wxArrayToXml($parameters = NULL){
            if(is_null($parameters)){
                $parameters = $this->parameters;
            }
            
            if(!is_array($parameters) || empty($parameters)){
                die("参数不为数组无法解析");
            }
            
            $xml = "<xml>";
            foreach ($arr as $key=>$val)
            {
                if (is_numeric($val))
                {
                    $xml.="<".$key.">".$val."</".$key.">"; 
                }
                else
                    $xml.="<".$key."><![CDATA[".$val."]]></".$key.">";  
            }
            $xml.="</xml>";
            return $xml; 
        }
        
        /*******************************************************
         *      微信卡券：上传LOGO
         *******************************************************/
        public function wxCardUpdateImg() {
            $wxAccessToken 	= $this->wxAccessToken();
            //$data['access_token'] =  $wxAccessToken;
            $data['buffer']     =  '@D:\\workspace\\htdocs\\yky_test\\logo.jpg';
            $url 			= "https://api.weixin.qq.com/cgi-bin/media/uploadimg?access_token=".$wxAccessToken;
            $result 		= $this->wxHttpsRequest($url,$data);
            $jsoninfo 		= json_decode($result, true);
            return $jsoninfo;
            //array(1) { ["url"]=> string(121) "http://mmbiz.qpic.cn/mmbiz/ibuYxPHqeXePNTW4ATKyias1Cf3zTKiars9PFPzF1k5icvXD7xW0kXUAxHDzkEPd9micCMCN0dcTJfW6Tnm93MiaAfRQ/0" } 
        }
        
        /*******************************************************
         *      微信卡券：上传LOGO
         *******************************************************/
        public function wxCardColor(){
            $wxAccessToken 	= $this->wxAccessToken();
            $url                = "https://api.weixin.qq.com/card/getcolors?access_token=".$wxAccessToken;
            $result 		= $this->wxHttpsRequest($url,$data);
            $jsoninfo 		= json_decode($result, true);
            return $jsoninfo;            
        }
        
    }